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Hypericum lydium Boiss.
Section: sect. HirtellaSubsection: Platyadenum
- lectotype: E - Boissier - [node:field_collector_number]
- lectotype: G - Boissier - [node:field_collector_number]
- syntype: G - Boissier - [node:field_collector_number]
Perennial herb, 0.1–0.75 m tall, glabrous sometimes except leaves, erect to decumbent from sometimes branching taproot, not rooting, branching at base and sometimes up to inflorescence, with sterile shoots decumbent. Stems rarely glaucous, with ± numerous pale to amber or reddish, sometimes very prominent glands towards base or throughout; internodes 15–40 mm, usually exceeding leaves. Leaves sessile to very shortly pseudopetiolate, ascending to spreading, sometimes glaucous; lamina (main stem) 9–35 × 0.7–4(6) mm, linear, apex rounded or rarely obtuse, margin plane or ± revolute, base cuneate to rounded, 1-veined or with up to 4 pairs of lateral branches, with laminar glands pale, numerous, small, marginal glands dense; lamina (axillary and sterile shoots) smaller narrower, otherwise similar. Inflorescence 10–∞-flowered, from 5– 12 nodes, cylindric to subspicate or narrowly pyramidal, dense or lax, 50–250(–340) mm long, with lateral cymules 1–4(–8)-flowered, occasionally with one pair of flowering branches below; bracts and bracteoles linear, entire or rarely irregularly black-glandular-ciliate. Flowers 10–22 mm in diam., with petals spreading to ascending after flowering; buds ellipsoid, acute or rarely broadly ellipsoid and rounded. Sepals subequal or equal, ¼–½ united, not imbricate, 2–4 × 0.5–2 mm, lanceolate or or rarely ovate to narrowly oblong or linear, acute to subacute or rarely obtuse; veins 3–5; margin wholly or distally with sessile globose to ellipsoid or depressed-globose black glands or more often black-glandular-denticulate to -ciliate; laminar glands pale, linear. Petals bright golden yellow, sometimes red-tinged or -veined, 6–12 × 5–6 mm, 3 × sepals, narrowly to broadly obovate, unguiculate, rounded, distally black-glandular-ciliate; laminar glands pale, ± numerous, punctiform to striiform. Stamens c. 30–40, longest c. 5–7 mm; filaments rarely red-tinged. Ovary 2–3 × 1–1.5 mm, ovoid, ± rostrate; styles 3–4.5 mm, 1.5 × ovary. Capsule 6–10 × 3.5–6 mm, ovoid and acuminate to subglobose and rostrate. Seeds pale to reddish brown, c. 1.5 mm long.